body {
    margin: 0px;
    padding: 0px;
}

.scale {
    color: #888;
    font-weight: normal;
    margin-left: 10px;
}

.title {
    text-align: center;
    font-size: 25px;
    font-weight: bold;
    margin-top: 10px;
    margin-bottom: 10px;
}

 .panel-c {
     display: flex;
     gap: 10px;
     flex-direction: row;
     flex-wrap: nowrap;
     justify-content: center;
     align-content: center;
     padding-left: 10px;
     padding-right: 10px;
}

.panel-l {
     display: flex;
     gap: 10px;
     flex-direction: row;
     flex-wrap: wrap;
     justify-content: left;
     align-items: center;
     align-content: left;
}

.panel-e {
    display: flex;
    gap: 10px;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    align-content: left;
}

.large-gap {
    row-gap: 25px;
    column-gap: 50px;
}

.scrollable {
    height: 100%;
    overflow-y: auto;
}

.panel-s {
     display: flex;
     gap: 10px;
     flex-direction: column;
     flex-wrap: nowrap;
     justify-content: left;
     align-items: left;
     align-content: left;
}

.item {
     flex: 0 1 auto;
}

.ctrl {
    margin-top: 10px;
    margin-bottom: 10px;
}

.numinput {
    width: 60px;
}

.widenuminput {
    width: 80px;
}

.shortnuminput {
    width: 35px;
}

.surface-holder {
    border: 1px solid gray;
    border-radius: 10px;
    height: calc(100% - 10px);
    margin: 10px;
    background: #f0f0f0;
}

.controls {
    border: 1px solid gray;
    border-radius: 10px;
    height: calc(100vh - 90px);
    overflow-y: auto;
    padding: 10px;
    margin: 10px;
}

.slider {
    width: 280px;
}

.slider-label {
    width: 120px;
    gap: 2px;
    flex-wrap: nowrap;
}

.listbox {
    width: 200px;
    height: 150px;
    border: 1px solid gray;
    overflow-y: auto;
}

.listbox-item {
    color: #000;
    background: #FFF;
    padding-left: 5px;
    padding-top: 2px;
    padding-bottom: 2px;
    margin: 2px;
    cursor: pointer;
}

.listbox-item-selected {
    color: #FFF;
    background: #6D9EBA;
}

.listbox-item-title {
    display: inline-block;
    margin-left: 5px;
}

.listbox-item-marker {
    width: 10px;
    height: 10px;
    border: 1px solid #FFF;
    background: hsl(360, 0%, 50%);
    display: inline-block;
}

.listbox-item-visibility {
    margin-left: 10px;
    margin-right: 2px;
    display: inline-block;
    width: 13px;
    height: 13px;
    border: solid 2px #7F7F7F;
    border-radius:  75% 15%;
    position: relative;
    transform: rotate(45deg) translateY(3px);
    background: #fff;
    box-shadow: 0px 0px 1px 1px #FFF;
}

.listbox-item-visibility:before {
    content: "";
    display: block;
    position: absolute;
    width: 5px;
    height: 5px;
    border: solid 2px #7F7F7F;
    border-radius: 50%;
    left: 2.5px;
    top: 2.5px;
    background: #fff;
}

.listbox-item-visibility-off {
}

.listbox-item-visibility-off:after {
    content: "";
    transform: translate(-3px, 5px);
    width: 20px;
    height: 3px;
    background: #650E00;
    display: block;
}

.split-horizontal {
    display: flex;
    flex-direction: row;
    height: calc(100vh - 48px);
}

.split-vertical {
    height: calc(100% - 10px);
}

.gutter {
    background-color: #eee;
    background-repeat: no-repeat;
    background-position: 50%;
}

.gutter.gutter-horizontal {
    background-image: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAeCAYAAADkftS9AAAAIklEQVQoU2M4c+bMfxAGAgYYmwGrIIiDjrELjpo5aiZeMwF+yNnOs5KSvgAAAABJRU5ErkJggg==");
    cursor: col-resize;
}

.gutter.gutter-vertical {
    background-image: url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAB4AAAAFAQMAAABo7865AAAABlBMVEVHcEzMzMzyAv2sAAAAAXRSTlMAQObYZgAAABBJREFUeF5jOAMEEAIEEFwAn3kMwcB6I2AAAAAASUVORK5CYII=');
    cursor: row-resize;
}